Lang, K. R., & Gingerich, O. (1979). A Source book in astronomy and astrophysics, 1900-1975. Harvard University Press.
Chicago Style (17th ed.) CitationLang, Kenneth R., and Owen Gingerich. A Source Book in Astronomy and Astrophysics, 1900-1975. Cambridge, Mass.: Harvard University Press, 1979.
MLA (8th ed.) CitationLang, Kenneth R., and Owen Gingerich. A Source Book in Astronomy and Astrophysics, 1900-1975. Harvard University Press, 1979.
Warning: These citations may not always be 100% accurate.